Q: What are the prime factors of the number 69,749,568?

 A: 2, 3, 7, 17299

Why are those the prime factors of the number 69,749,568?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 69,749,568

69,749,568
Factor Arrows
234,874,784
Factor Arrows
217,437,392
Factor Arrows
28,718,696
Factor Arrows
24,359,348
Factor Arrows
22,179,674
Factor Arrows
21,089,837
Factor Arrows
3363,279
Factor Arrows
3121,093
Factor Arrows
717,299

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 3, 7, 17299

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 7 x 17,299 = 69,749,568

This can also be written as 26 x 32 x 71 x 17,2991 = 69,749,568

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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